TY - JOUR T1 - ULTRASTRUCTURE OF DISPERSED AND IN SITU SPECIMENS OF THE DEVONIAN SPORE RHABDOSPORITES LANGII: EVIDENCE FOR THE EVOLUTIONARY RELATIONSHIPS OF PROGYMNOSPERMS JO - PALAEONTOLOGY PY - 2009/01/01 AU - Wellman CH ED - DO - DOI: 10.1111/j.1475-4983.2008.00823.x VL - 52 SP - 139 EP - 167 Y2 - 2025/06/18 ER -